Risk analysis using time Petri nets

This paper discusses some possible uses of Petri nets in risk analysis. After mentioning how to avoid risk, how to recover from a risky state, and how to detect how fault tolerant a modeled system is, risk in project planning is studied in detail. After having calculated all possible state classes in which the system can arrive, global clock timing information is added to each class. Timings for the best case and the worst case for the global project and each of its subcomponents are obtained. A worked out example of a chemical plant is given.